*This adapter is included with our BOG DeathGrip Ball Head Adapter kit. No need to purchase separately.  BUT... If you already have another brand Ball Head Adapter for your BOG DeathGrip tripod, and want to attach your clamp to your ball head, this Arca Swiss adapter uses your factory bolts to attach to the underside of the clamp. You can then switch between using the ball head or the clamp mount at the turn of a knob! 
 
**Clamp Mount is not included.